lumina: add maintainers team

nixos/modules/services/x11/desktop-managers/lumina.nix

···
 in
 
 {
+  meta = {
+    maintainers = teams.lumina.members;
+  };
+
   options = {
 
     services.xserver.desktopManager.lumina.enable = mkOption {

pkgs/desktops/lumina/lumina-calculator/default.nix

···
     homepage = "https://github.com/lumina-desktop/lumina-calculator";
     license = licenses.bsd3;
     platforms = platforms.unix;
-    maintainers = [ maintainers.romildo ];
+    maintainers = teams.lumina.members;
   };
 }

pkgs/desktops/lumina/lumina-pdf/default.nix

···
     homepage = "https://github.com/lumina-desktop/lumina-pdf";
     license = licenses.bsd3;
     platforms = platforms.unix;
-    maintainers = [ maintainers.romildo ];
+    maintainers = teams.lumina.members;
   };
 }

pkgs/desktops/lumina/lumina/default.nix

···
     homepage = "https://lumina-desktop.org";
     license = licenses.bsd3;
     platforms = platforms.unix;
-    maintainers = [ maintainers.romildo ];
+    maintainers = teams.lumina.members;
   };
 }